Can you uphold above quotes with some more facts please? What Linux distribution are you using? What Kernel Version are you using? What kind of files do you have on that server (Video, Word-Files, Sound-Files, DB, ...?).
It's mostly a (very low-volume) mail and web server. It's got ~200MB of web, about 11GB of "cache" files for a photo app I've got (about 31k files totally 11GB). I do a little bit of low volume S3 log processing on it every hour. My home directory is 2.5GB with about 107k files (that includes dropbox). The IMAP store is approaching 2 decades of mail with about 239k files totaling about 4.4GB of data. /root is a bit under 500MB with duplicity caches and stuff. Less than 300 files there.
I also keep a few snapshots I take every hour. There's a total of 347 snapshots across all the subvolumes (there are three).
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 142G 102G 37G 74% /
none 2.0G 192K 2.0G 1% /dev
none 2.0G 0 2.0G 0% /dev/shm
none 2.0G 60K 2.0G 1% /var/run
none 2.0G 0 2.0G 0% /var/lock
/dev/sda1 230M 69M 150M 32% /boot
Anything further I can tell you?